Don't know how it comes. Anyone knows how/where to fix it? I'm appreciative of knowing whether it's a bug and where the bug report could be found. This thing kept showing up since I upgraded to 12.10 from 12.04. And I'm surprisingly impressed as if I'm the only one bothered by this.

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At first glance it looks like this is a bug in the 10_no_nonnative_crash patch in the Ubuntu packaging for libcanberra, but I can't find a bug report for it.
–
cscarneyOct 7 '12 at 21:10

Yes, the applications run with no problem. This issue was there since I upgraded to 12.10. I cannot find any similar bug report either. At first I thought it's some inconsistency due to glib schema changes in the new version and it will flush out during update. However it does not.
–
funicornOct 8 '12 at 23:42